Method of and apparatus for attaching soles to shoes



METHODS OF AND APPARATUS FOR ATTAGHING SOLES T0 SHOES w Sept. 14, 1943; F. L. BRANDT Filed Jan. 26, 1942 Fig.5

' sole has to be tacked on the .shoe bottom and- Patented Sept. 14, 1943 METHOD or AND APPARATUS FOR JATTAGHINGSOLES ro snons s I fH ,".FraneislLsBrandt, Bridgeport, cam, assignor Shoe' Ma chinery oprpo at on'rlem- J., afcorporation"of Newiersey 4' class. f

This invention relates :to methods of and .ap-

paratus-for attaching solesuto shoes'; the invenl- I 'while under pres then placed under pressure.

zrbe" forced }out sure the active cement is apt to from between the shoe andsole'and 'to 'get' on the upper, requiring anexpensive cleaningOP 1 atlon.i i

Objects of this-invention areto provide a novel methodofcement sole attachment whereby. the

above-indicated disadvantages-of .priorv methods will be avoided.v I f' 1.11 In one aspect" the invention comprises a corresponding portions or. theoutsolef-This treatment, being carried on about the periphery of the shoe andfsole, results in the firm 'attachment of the sole to .the' shoe, obviates the necessity'of tacking the shoe and solevv together and eliminates the use of shoe supports or. lasts .as

well as" pressure-applying. pads; Since; the ce-' ment at thetime of attachment is incapable of flowing under pressure; the uppers remain clean, resultingfin. saving. time and improved wc-rk'man'shiptr; ,v Y g Thewapparatus adapted for practicing the method may comprise a 'reciprocating plunger operated 'to deliver blows. upon the treadface of the outsole and a horn arranged to support the insole at thepoint Where the blow is delivered bythehammer, meansbeing provided for raising the horn to bring the work" into the field of action of-thehammer. "Preferably the hammeris driven positively and the horn is provided: with a yielding mechanism whereby a slight. depression of the work is permitted, the. pressureof the hammer being adapted:to be applied during method of cement-attachingsoles td5shoes1which consists in providing a shoe and its: 'solerwith pressure-responsive cement on their attaching faces, locating the sole. on the shoe;.supporting a localized area'only of the inner face of .the insole, applying pressure to 'a corresponding 'area.:at,- the opposite side of the outsoletocause .adhee,

sion-of the outsoleto the shoe in said area-"and' repeating the operation atsuccessive localized areas about the periphery of the. shoe. 1 This application of pressure to force the insole and outsole together at localized areas about :the periphery of 1 the shoe results in a .veryfirm attachment of the sole to the shoe'when a strong cementis employed. A suitable cement for the purpose is a chloroprene cement such as that disclosed in Letters" Patent of theUnited States No. 2,061,296, granted'Novembe name of Walter H. Wedger. After cement of this kind is applied to the attaching faces, of the shoe and sole and allowed to dry for a short time, it reaches a condition in which, while dry to the touch, it will stick when pressed upon a similarly'cemented surface. With the shoe and sole in this conditior'rthe sole may be readily -spotted on the shoe, the preliminary sticking of the cementedsurfaces being sufficient to hold the sole in position. The shoe is then treated by applying heavy pressure to localized portion of the margin of the insole inside the shoe an r 17, 1936, in the depression of 1 the "support. and its releases- In thev drawing," L Fig. l-isaside elevationofan apparatus suitable for use-in pract'icing my improved method; 7 Fig. 2 isi'a perspective viewof an outsole'prepared forattachmentito'a shoe;

Fig; 3is a perspective view of a shoe to receive .the outsolefof Fig. 2; and" 'Fig-i isal'transversesection throughthe shoe showing thaoperating instrumentalities in work,-

ing position.

. l In practicing "my. improved method, anthems If) is firstgprepareiias shown in Fig. 2, by rough- [2 of its attaching'face ing; the marginal. portion 1 B, for example, of

andapplying thereto cement the'type disclosed in the patent referred to above, or 1 other pressu re responsive cements, such, as

'Irubber cementor latex cement may be employed.

The shoenmay.be anew-shoe, asshown in Fig.

or an-oldshoe, part or all of the sole of which The overlasted marginal poris to be replaced.

tion lli'of an upper 18 which rests upon an insole Y 2B is roughened and coated with cement likethat on the outsole. After the cement has dried for a short time, the sole Iii is located on the overlasted portion iii of the upper of the shoe and causedto adhere by pressure of the fingers or a few taps of a hammer. If it isa new shoe, a last '22 is withdrawn and the shoe placed over a horn v 24 of the apparatus. The top face of the horn, which is flat, rests against the insole 20 at its marginal portionand directly opposite the horn prepared the intervals while the hammer 26 is lifted from v the sole, the shoe is moved along so that slic cessive portions of the sole, upper and'insole will be subjected to repeated percussional im pulses by the action of the hammer.

The apparatus may conveniently comprise a;

column or frame 28 on the top. of .,.w i.ch.isj .;j.

mounted a motor 30 connected by a belt 32 to a pulley 34 on a. shaft 36, the.pulley being oon nected to the shaftby a suitableclutch 38 open-Q'- ated by a rod 40 connected to a'trea'dle'fl. clutch may be of the type known asa'pin clutch which, when the operating rod 40 is depressed,

will cause the shaft 36 to be rotated continuously and, when the. rod 40. is raisedwill, cause the shaft to, stop witirthe hammer-2E in raisedposition... .A clutch of. zthisgtype ishdisclosed in United States Letters. Patent ,No. 958,293, granted -May 17,1910, on applicationof T.'G. Plant. On the. front end: of. the shaft; 36

- is an eccentric pin 44 which engages, a transverse slot formed in a plunger dimoun'tedfor vertical movement whereby the plunger is. caused to be positively reciprocated. The horn 24; has a stem 48 mounted for vertical movement in. the frame 28. The stem. 48. is hollow andcontainsa spring.

50. the upper end of whichfrests. against a. disk 5| which is engaged by a screw. 52 threaded in the horn 24. The lower end. of the. spring rests against the head of a stud. which is arranged to slide througha plug. 58. threaded into thelower end of the stem 48. Connected to. the Stu-(1,56 is a block 60 towhich is pivoted at B2 angle lever having arms 64, 66. Thearm. 54. is. con.-

nected toa link 88. thelower end; of whichhas a fixed bearing at 10. Thearm 66 is. connected cause the clutch to be'tripped and the. hammer operated. A treadle spring 82 connected between the treadle and a pin fixed in the frame serves to raise the treadle to insure that the toggle 64, 68 will be broken and the rod raised to disconnect the clutch when the treadle is r ea e Having thus described my, invention, what I claim as new anddesire to secure by Letters Patent of the United States is:

1. That improvement in methods of cementat aching soles to shoes in which the marginal portion, of. the upper is, lasted inwardly over an insole substantially in parallel'relation thereto w h consists in applying a pressure-responsive cement'to the overlasted margin of the upper and to the attaching face of an outsole, locating the outsole. on tthebottom of the shoe, and then apto the treadie. dl'byimeans of ayieldingly extenr sible link comprising a .rod 12. pivoted'to. the treadle and a link I4 pivotedtothearmfifin rod 12 passes freely through an offset 16. on the link 14. A tension spring. 181s. confined on. the rodbetween theofiset .IScanda nut on theupper end of the rod;and is maintained: under. any. de-

sired initial. tension by anut 811; threaded; on the I rod. and engaging the offset 116. Depression of the treadle 42 acts through. theyielding 11 3.12, 14 on the arm Bito straighten theitngglefit, 1&8, thereby raising the horn 24 towardtbe. haqnner 26 and bringingthe work intothefieldyof action The. spring whichsupporfs of the hammer. the horn may-be .set at any predetermined' initial tension by turning the screw- 52" and permits; the work to. yield when the. pressureof. the hammer exceeds the tensionfor which the springis. set. After the togglehas been straightenedthesprlng l8 permits further depressionzotthe-treaidle to plying. a heavy pressure to different localized areas of the outsole successively about the periphery thereofowhile supporting the shoe on y in each; location-where the pressure. is appliedby engagement with. the. inside foot-enga ing surface of the insole to compact the upper materials between. theout'sole and the insole and-,tocause adhesion of the outsole to the shoe.

2. That iimprovementinmethodsof, cemen attachingsoles to shoesv which. consists in, locatingan-outsolepn the bottom eta, shoe with pres.- sureeresponsive cement, supporting diiferent lo.- calized, areas of the footeengae'ing surface of the insole 1 successivelyabout the periphery, of; the shoe, and subjecting corresponding localized areas o: the-:. tread: face. of thseroutsoie .tothe ac.-

tion of. apower-driven reciprocating hammer. to

cause the outsole .to .be. secured. imlloesivelyv to. the bottomot. the shoe.

, .3; An apparatus for.useincementattachh sole-s; tozshoes comprising .a positively recipmr cated hammer having a fiat face to engaxein. substantial areaJof the. marginal. portion of the outsole of a. shoeya horn having a...fiat.'f.ace to engage a corresponding area. or thepinsole of the shoe opposite to the hammenaspring supporting the horn, a. toggle .for raisingrthe horn, and manually opemtedv means for. straightening the; toggle. and. controlling the operation. ot the 4'. An: apparatusror .use in cement-attaching sales. to 'shoescomprising a. neciproe catedhammer-having afiat face to engage a, substantiala. area. otfche marginal. portion of the outsole. of agshoe, .a. hornhaving-sa flat facev to engagea correspondingarea. of theinsole of; the opposite. to the hammer, aspringsupportr the..hom,.means for setting-the spring. at a. predetermined initial tension, a tog le for-mils.- in: horn, and manually operated meansfnr straightening. the toggle to. bring :the :shoe into 

